CA2694223A1 - Process for treating pulp mill condensates using a hollow fiber contactor - Google Patents
Process for treating pulp mill condensates using a hollow fiber contactor Download PDFInfo
- Publication number
- CA2694223A1 CA2694223A1 CA2694223A CA2694223A CA2694223A1 CA 2694223 A1 CA2694223 A1 CA 2694223A1 CA 2694223 A CA2694223 A CA 2694223A CA 2694223 A CA2694223 A CA 2694223A CA 2694223 A1 CA2694223 A1 CA 2694223A1
- Authority
- CA
- Canada
- Prior art keywords
- undesirable compounds
- pulp mill
- aqueous
- compounds
- condensates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract 13
- 239000012510 hollow fiber Substances 0.000 title abstract 2
- 150000001875 compounds Chemical class 0.000 claims abstract 13
- 239000012528 membrane Substances 0.000 claims abstract 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract 6
- 230000002209 hydrophobic effect Effects 0.000 claims abstract 2
- 239000000243 solution Substances 0.000 claims abstract 2
- 239000012530 fluid Substances 0.000 claims 6
- 239000007789 gas Substances 0.000 claims 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 2
- 239000000835 fiber Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000003570 air Substances 0.000 claims 1
- 239000012670 alkaline solution Substances 0.000 claims 1
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 1
- 239000001569 carbon dioxide Substances 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000002655 kraft paper Substances 0.000 abstract 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 239000012527 feed solution Substances 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000005201 scrubbing Methods 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/24—Dialysis ; Membrane extraction
- B01D61/246—Membrane extraction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/13—Use of sweep gas
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/063—Underpressure, vacuum
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Urology & Nephrology (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Physical Water Treatments (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Treating Waste Gases (AREA)
Abstract
A method and apparatus for the treatment of pulp mill condensates is described. A hollow fiber contactor, incorporating a hydrophobic membrane, was used to remove several undesirable compounds from pulp mill condensates. For example, TRS compounds and SO2 were efficiently stripped from kraft and sulphite mill evaporator condensates, respectively. Methanol was also removed from kraft mill condensates but at a lower efficiency than TRS.
Furthermore, other undesirable compounds found in condensates of pulp mills that contribute to the BOD and COD loading to effluent treatment systems were also removed. These contactors are cost effective since air, vacuum or a suitable solvent or scrubbing solution can be used as the stripping medium to drive off through the membrane several undesirable compounds from the feed solution. The undesirable compounds removed can thus be burned in the recovery boiler, lime kiln or a dedicated boiler.
Furthermore, other undesirable compounds found in condensates of pulp mills that contribute to the BOD and COD loading to effluent treatment systems were also removed. These contactors are cost effective since air, vacuum or a suitable solvent or scrubbing solution can be used as the stripping medium to drive off through the membrane several undesirable compounds from the feed solution. The undesirable compounds removed can thus be burned in the recovery boiler, lime kiln or a dedicated boiler.
Claims (10)
1. A method for removing undesirable compounds from an aqueous pulp mill effluent stream comprising:
providing a hollow fibre membrane contractor comprising a plurality of hollow fibres, each fibre having a hydrophobic membrane wall having first and second opposed sides;
flowing the aqueous pulp mill effluent stream through said contactor, in contact with the first sides of the walls of the fibres; and allowing undesirable compounds in said flowing stream to migrate through the membrane walls to said second sides of the walls of the fibres.
providing a hollow fibre membrane contractor comprising a plurality of hollow fibres, each fibre having a hydrophobic membrane wall having first and second opposed sides;
flowing the aqueous pulp mill effluent stream through said contactor, in contact with the first sides of the walls of the fibres; and allowing undesirable compounds in said flowing stream to migrate through the membrane walls to said second sides of the walls of the fibres.
2. A method according to claim 1, further including flowing an acceptor fluid through the contactor, in contact with the second sides of the walls of the fibres, and said flowing acceptor fluid extracting the undesirable compounds migrating through the membrane walls.
3. A method according to claim 2, wherein said acceptor fluid is a stripping gas.
4. A method according to claim 3, wherein said gas is nitrogen, carbon dioxide or air.
5. A method according to claim 2, wherein said acceptor fluid is an aqueous alkaline solution.
6. A method according to claim 1, wherein a vacuum is formed at said second sides, said vacuum extracting the undesirable compounds migrating through the membrane walls.
7. A method according to any one of claims 2 to 5, wherein said aqueous effluent stream and said acceptor fluid flow through a plurality of contactors in series, whereby said effluent stream is depleted in undesirable compounds at each successive contactor and said acceptor fluid is enriched in undesirable compounds at each successive contactor.
8. A method according to any one of claims 1 to 7, wherein said aqueous effluent stream is a pulp mill condensate.
9. A method according to any one of claims 1 to 7, wherein said aqueous effluent stream is steam stripper off gas condensate or any other methanol-rich solution.
10. In a process of pulp manufacture in a pulp mill in which an aqueous pulp mill effluent stream is formed, containing undesirable compounds, the improvement wherein these compounds are removed from the effluent by the method of any one of claims 1 to 8, and an aqueous stream is removed, depleted in these compounds, and is recycled in the pulp mill as water supply in the manufacture.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US93510507P | 2007-07-26 | 2007-07-26 | |
| US60/935,105 | 2007-07-26 | ||
| PCT/CA2008/001373 WO2009012597A1 (en) | 2007-07-26 | 2008-07-24 | Process for treating pulp mill condensates using a hollow fiber contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2694223A1 true CA2694223A1 (en) | 2009-01-29 |
| CA2694223C CA2694223C (en) | 2012-01-31 |
Family
ID=40280963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2694223A Active CA2694223C (en) | 2007-07-26 | 2008-07-24 | Process for treating pulp mill condensates using a hollow fiber contactor |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8349130B2 (en) |
| EP (1) | EP2188216B1 (en) |
| BR (1) | BRPI0813953A2 (en) |
| CA (1) | CA2694223C (en) |
| ES (1) | ES2672768T3 (en) |
| PT (1) | PT2188216T (en) |
| WO (1) | WO2009012597A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8152956B2 (en) * | 2007-12-26 | 2012-04-10 | Fpinnovations | Use of chemical pulp mill steam stripper off gases condensate as reducing agent in chlorine dioxide production |
| IT1395383B1 (en) * | 2009-09-09 | 2012-09-14 | Saipem Spa | METHOD OF SEPARATION OF AMMONIACA AND CARBON DIOXIDE FROM AQUEOUS SOLUTIONS |
| FI127304B (en) * | 2011-02-03 | 2018-03-15 | Stora Enso Oyj | A process for preparing purified methanol from a condensate of sulphate pulp cooking |
| US9328294B2 (en) | 2012-09-04 | 2016-05-03 | Uop Llc | Process and apparatus for extracting sulfur compounds in a hydrocarbon stream |
| US9394220B2 (en) | 2013-06-19 | 2016-07-19 | Fpinnovations | Method for producing bio-methanol at pulp mills |
| US8999149B2 (en) | 2013-06-28 | 2015-04-07 | Uop Llc | Process for removing gases from a sweetened hydrocarbon stream, and an appartus relating thereto |
| US9393526B2 (en) | 2013-06-28 | 2016-07-19 | Uop Llc | Process for removing one or more sulfur compounds and an apparatus relating thereto |
| EP3302747B1 (en) * | 2015-06-02 | 2022-04-20 | ConocoPhillips Company | Method of removing hydrogen sulfide from water |
| WO2016196773A1 (en) * | 2015-06-02 | 2016-12-08 | Conocophillips Company | Method of removing hydrogen sulfide from water |
| US20200299850A1 (en) * | 2019-03-22 | 2020-09-24 | Eco-Tec Limited | Processes for treating electrolyte from an electrorefining process |
| AR122640A1 (en) * | 2020-06-17 | 2022-09-28 | Suzano Sa | METHOD TO TREAT A CONDENSATE IN A PULP MANUFACTURING PROCESS |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3956112A (en) * | 1973-01-02 | 1976-05-11 | Allied Chemical Corporation | Membrane solvent extraction |
| US4002525A (en) * | 1975-03-13 | 1977-01-11 | Flambeau Paper Company | Chemical recovery from waste liquors utilizing indirect heat exchangers in multi-stage evaporation plus contact steam stripping |
| US4664808A (en) * | 1982-08-13 | 1987-05-12 | General Electric Company | Method for continuous separation of dissolved materials |
| US4789468A (en) * | 1984-08-28 | 1988-12-06 | The Trustees Of The Stevens Institute Of Technology | Immobilized-interface solute-transfer apparatus |
| JPH0775622B2 (en) * | 1985-07-16 | 1995-08-16 | テルモ株式会社 | Hollow fiber membrane for artificial lung, method for producing the same, and artificial lung using the hollow fiber membrane |
| US4952751A (en) | 1988-04-08 | 1990-08-28 | Membrane Technology & Research, Inc. | Treatment of evaporator condensates by pervaporation |
| US4995888A (en) * | 1988-07-05 | 1991-02-26 | Texaco Inc. | Separation of gas from solvent by membrane technology |
| US4960520A (en) * | 1989-07-14 | 1990-10-02 | The Regents Of The University Of Minnesota | Method of removing organic volatile and semi-volatile contaminants from an aqueous solution |
| US5232593A (en) * | 1992-03-04 | 1993-08-03 | Zenon Environmental Inc. | Cartridge of hollow fiber membrane wafers and module containing stacked cartridges |
| US5294307A (en) * | 1992-07-31 | 1994-03-15 | Huron Tech Corp | Integrated process for the production of alkali and alkaline earth metal chlorates and chlorine dioxide |
| US6306357B1 (en) * | 1994-01-18 | 2001-10-23 | Abb Flakt Ab | Process and apparatus for absorbing hydrogen sulphide |
| US5637224A (en) * | 1994-09-14 | 1997-06-10 | New Jersey Institute Of Technology | Hollow fiber contained liquid membrane pervaporation for removal of volatile organic compounds from aqueous solutions |
| SE503793C2 (en) * | 1995-02-01 | 1996-09-09 | Kvaerner Pulping Tech | Process for the treatment of condensate |
| JP3431166B2 (en) * | 1995-09-21 | 2003-07-28 | 旭化成株式会社 | Hollow membrane module |
| JP4050343B2 (en) * | 1996-04-02 | 2008-02-20 | 富士通株式会社 | Tuning fork vibration gyro |
| US5911853A (en) * | 1997-09-11 | 1999-06-15 | International Paper Company | Method for treating paper mill condensate to reduce the amount of sulfur compounds therein |
| US6110376A (en) * | 1998-02-09 | 2000-08-29 | J. D. Irving, Limited | Use of reverse osmosis membranes to treat evaporator clean condensate |
| SE514742C2 (en) * | 1998-11-26 | 2001-04-09 | Excelentec Holding Ab | Ways to purify sulphide-containing condensates |
| US6149817A (en) | 1999-03-08 | 2000-11-21 | Celgard Inc. | Shell-less hollow fiber membrane fluid contactor |
| DE10133609A1 (en) | 2001-07-13 | 2003-02-13 | Ufz Leipzighalle Gmbh | Process and device for the decontamination of water, especially groundwater, which is heavily and complexly contaminated with organic halogen compounds (HKW) |
| US20060016751A1 (en) * | 2004-07-23 | 2006-01-26 | Rayonier Products And Financial Services Company | Method of concentrating pulp mill extracts |
-
2008
- 2008-07-24 PT PT87832861T patent/PT2188216T/en unknown
- 2008-07-24 BR BRPI0813953-9A2A patent/BRPI0813953A2/en active Search and Examination
- 2008-07-24 EP EP08783286.1A patent/EP2188216B1/en active Active
- 2008-07-24 ES ES08783286.1T patent/ES2672768T3/en active Active
- 2008-07-24 CA CA2694223A patent/CA2694223C/en active Active
- 2008-07-24 US US12/452,735 patent/US8349130B2/en active Active
- 2008-07-24 WO PCT/CA2008/001373 patent/WO2009012597A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| EP2188216B1 (en) | 2018-04-25 |
| EP2188216A4 (en) | 2012-07-04 |
| US8349130B2 (en) | 2013-01-08 |
| WO2009012597A1 (en) | 2009-01-29 |
| US20100122784A1 (en) | 2010-05-20 |
| CA2694223C (en) | 2012-01-31 |
| EP2188216A1 (en) | 2010-05-26 |
| ES2672768T3 (en) | 2018-06-18 |
| PT2188216T (en) | 2018-07-03 |
| BRPI0813953A2 (en) | 2014-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2694223A1 (en) | Process for treating pulp mill condensates using a hollow fiber contactor | |
| US6290812B1 (en) | Method for treating process water in connection with pulp bleaching | |
| WO2012062353A1 (en) | Method for using waste water arising during the production of lignocellulosic fibrous materials | |
| US20090025892A1 (en) | Method to recover chemicals in mechanical pulping | |
| WO2015010179A1 (en) | Method of reducing chloride and potassium ion concentrations in a pulp mill chemical recovery system | |
| FI118432B (en) | Method for treating condensate | |
| JP5528671B2 (en) | Process for the production of sulfur oxides | |
| WO2019106069A1 (en) | Method and a system for washing paper pulp | |
| RU2636560C2 (en) | Method and device for processing liquid flows on pulp mill | |
| BR112020010000A2 (en) | method for adjusting the s / na balance of a pulp mill, uses of a bioreactor, and systems arranged to adjust the s / na balance of a pulp mill | |
| JP2008529947A5 (en) | ||
| CN210885723U (en) | Nearly zero release processing system of incineration plant's leachate | |
| AU2010200081B2 (en) | Process for adjusting the pH of a cellulosic pulp, production of pulp or paper from cellulosic pulp and use of (bi)carbonate removal for reducing the consumption of acid | |
| BR112015010402B1 (en) | METHOD AND SYSTEM TO TREAT LIQUID FLOWS IN A CHEMICAL CELLULOSE FACTORY | |
| CN205295057U (en) | High retrieval and utilization processing apparatus who contains salt waste water based on just permeate | |
| CN205700107U (en) | Desulfurization tower slot type liquid level regulation device | |
| CN107445329B (en) | Zero-emission treatment process for MTO alkaline washing waste alkali liquor | |
| CN103071392B (en) | Chemical regeneration method for waste paper pulping and papermaking comprehensive waste water polluted ultrafiltration membrane | |
| RU2635040C2 (en) | Method and device for processing liquid flows of pulp mill | |
| JP5217540B2 (en) | Manufacturing method of kraft pulp | |
| Björk et al. | Successful start-up of lignin extraction at Stora Enso Sunila mill | |
| Jemaa et al. | Bio-methanol production from kraft pulp mill condensates | |
| CN108579392B (en) | Method for utilizing hydrogen-producing acidic water | |
| WO2015001186A1 (en) | Method for treating effluents and process waters | |
| CN115608147A (en) | Flue gas desulfurization equipment, flue gas desulfurization system and flue gas desulfurization method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |